arch-arm: don't expose FEAT_VHE by default

If FEAT_VHE is implemented and Linux boots in EL2, it programs itself
to operate in EL2. This causes a later boot stall as explained in
https://gem5.atlassian.net/browse/GEM5-901.
We provide a parameter "have_vhe" to enable FEAT_VHE on demand. This is
disabled by default until fixed. This avoids users stalling on the common
case of booting Linux without a hypervisor.

Change-Id: I3ee7be1ca59afc0cbbda59fb3aad4c897c06405f
Signed-off-by: Adrian Herrera <adrian.herrera@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/39695
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

misc: Updated the RELEASE-NOTES and version number

Updated the RELEASE-NOTES.md and version number for the v20.1.0.2
hotfix release.

Change-Id: Ibb6b62a36bd1f9084f7d8311ff1f94b8564dbe9b
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/37435
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

cpu,stats: Fix incorrect stat names of ThreadStateStats

Previously, ThreadStateStats uses ThreadState::threadId() to
determine the name of the stats. However, in the ThreadState
constructor, ThreadStateStats is initialized before ThreadState
is intialized. As a result, the name of ThreadStateStats has
a wrong ThreadID.

This commit uses ThreadID instead of ThreadState to determine
the name of the stats.

This causes a name collision between ThreadStateStats and
ExecContextStats as both have the name of "thread_[tid]".
Ideally, those stats should be merged to the BaseSimpleCPU.
However, both ThreadStateStats and ExecContextStats have
a stat named numInsts. So, for now, ExecContextStats will
have a name of "exec_context.thread_[tid]", while ThreadStateStats
keeps its name.

Change-Id: If9a21549f98bd6e3ce6dc29bdf183e8fd5f51a67
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/37455
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

configs: Fix MemorySize division

The memory size is expected to be an integer.

Jira: https://gem5.atlassian.net/browse/GEM5-806

Change-Id: I44b2d423a3478d2598950779222151f09970cbd8
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/37255
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Srikant Bharadwaj <srikant.bharadwaj@amd.com>

misc: Updated the RELEASE-NOTES and version number

Updated the RELEASE-NOTES.md and version number for the v20.1.0.1
hot-fix.

Change-Id: I51f7ba6f1178a2d8e80488ed2184b8735c2234a2
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/37116
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Tested-by: kokoro <noreply+kokoro@google.com>

mem-garnet: Fix garnet network interface stats

Fixing a bug in garnet network interface where flit source delay is
computed using both tick and cycle.

Change-Id: If21a985f371a818611d13e9cd5ce344dbcf5fb2b
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/36416
Reviewed-by: Srikant Bharadwaj <srikant.bharadwaj@amd.com>
Maintainer: Matthew Poremba <matthew.poremba@amd.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/37115
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Reviewed-by: Jieming Yin <bjm419@gmail.com>

misc: Updated version to 20.1.0.0

Change-Id: Ic7a37581c58caa354eeecab051122116177d0721
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35456
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

scons: Removed -Werror for the gem5 20.1 release

While gem5 compiles on all our supported compilers, removing the -Werror
flag on the stable branch ensures that, as new compilers are released
with stricter warnings, gem5 remains compilable.

Change-Id: I9a356472dc4d729a3fef9f1455814c900103bd66
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35455
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>

misc: Updated CONTRIBUTING.md: 'master' -> 'stable'

The `master` branch is now the `stable` branch. This commit updates
CONTRIBUTING.md accordingly.

Change-Id: Ic5231eda336520e8a7260efac6474b4f0af08c37
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35457
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

misc: Add release notes for 20.1

Change-Id: I011ff987e222326dd7f0787c41043578b52b236a
Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35375
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>
Tested-by: kokoro <noreply+kokoro@google.com>

sim: Adding missing argument of panic function

panic function call in panicFsOnlyPseudoInst (src/sim/pseudo_inst.cc) needs to be invoked with argument (name).

Jira Issue: https://gem5.atlassian.net/jira/software/c/projects/GEM5/issues/GEM5-786?filter=allissues

Change-Id: Iecacab7b9e0383373b69e9b790fa822d173d29c3
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35040
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

ext: Disable range-loop-analysis warnings for pybind11

Change-Id: I9d9e118c1c70c2f6b11260fff31ecd763e491115
Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35296
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

tests,misc: Updated TestLib and boot-tests for gzipped imgs

In efforts to reduce storage costs and download times, the images hosted
by us have been gzipped. The TestLib framework has therefore been
extended to decompress gzipped files after download.

The x86-boot-tests are, at present, the only tests which use the gem5
images. These tests have been updated to download the gzipped image.

Change-Id: I6b2dbe9472a604148834820db8ea70e91e94376f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35257
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

scons,python: Add warning for when python3-config is not used

We cannot say for certain whether 'python-config' is python2 or python3,
but this patch will produce a warning if 'python3-config' is not used,
stating that support for python2 will be dropped in future releases of
gem5.

Change-Id: I114da359c8768071bf7dd7f2701aae85e3459678
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35256
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

tests: Removing gem5/hello_se/ref/simerr

This is not needed in any comparison we make. It was probably added in
error.

Change-Id: Ie771654f73d101d0ef90ca6e2864a7cb684b3919
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34996
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

scons,python: Add python2-config to PYTHON_CONFIG

PYTHON_CONFIG can be python2-config as well as python2.7-config.

Change-Id: I482cb922fcf26b37f67f2aca392e04968ca144bd
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35255
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

scons,python: Prioritize Python3 for PYTHON_CONFIG

Change-Id: I0ac4d90b93f2e0a9384216f759937f7b0aa23d41
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34899
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>

python: Flush the simulation stdout/stderr buffers

Occasionally gem5's stdout/stderr, when run within the TestLib
framework, will be shuffled. This is resolved by flushing the
stdout/stderr buffer before and after simulation.

In addition to this, the verifier.py has been improved to remove
boilerplate gem5 code from the stdout comparison.

Change-Id: I04c8f9cee4475b8eab2f1ba9bb76bfa3cfcca6ec
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34995
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

arch-arm: Instantiate a single HTM checkpoint at ISA::startup

Change-Id: I48cc71dce607233f025387379507bcd485943dde
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35016
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

cpu: Allow storing an invalid HTM checkpoint

Commits 02745afd and f9b4e32 introduced a mechanism for creating checkpoint
objects for hardware transactional memory (HTM) and Arm TME. Because the
checkpoint object also contains the local UID of a transaction, it is
needed before any architectural checkpointing takes places. This caused
segfaults when running HTM codes.

This commit allows ISAs to allocate a checkpoint once at the beginning
of simulation.  In order to do that we need to remove the validity check
assertion; the cpt will become valid only after a first successfull
transaction start

Change-Id: I233d01805f8ab655131ed8cd6404950a2bf6fbc7
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35015
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

mem: Fix some reference use in range loops

This change fixes two cases of range loops, one where we can't use
lvalue reference, and one more where we have to use an lvalue
reference as we can't create a copy. In both cases clang would warn.

Change-Id: I760aa094af66be32a150bad37acc21d6fd512a65
Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34776
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

mem: When loading an image directly in memory, use the right CL size.

Some code was added fairly recently which would load a memory image
into a memory directly in order to make it easier to set up ROMs.
Unfortunately, that code accidentally used the image size instead of
the cache line size when setting up the port proxy which would actually
write the data. This happens to work when the image size is a power of
two since that's all the proxy checks for, but there's no guarantee
that every image will be sized that way.

This change instead looks into the system object, retrieves the cache
line size from it, and uses that to set up the port proxy.

Change-Id: I227ac475b855d9516e1feb881769e12ec4e7d598
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35155
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

configs: Set kvm_map in DRAMInterface in Ruby.py

The kvm_map parameter from AbstractMemory has been moved from MemCtrl
(formerly DRAMCtrl) to DRAMInterface. Assign it to DRAMInterface
instead.

Change-Id: I4508aefcf5eb859d9ffe05c81d85a1b84ee0a196
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35095
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

fastmodel: Update the IRIS ThreadContext base class.

The syscall() method has been removed, and HTM related methods have
been added.

Change-Id: I796c1a554bfd4b1ee01a62c9c7ad403dd699cc0f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35038
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

arm,fastmodel: Update the VExpressFastModel to use ArmInterruptPins.

The HDLCD device now uses an ArmInterruptPin instead of a GIC and
interrupt number parameter.

Change-Id: I31122e66a1c18f61592f3dca214ee057baad8f88
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35039
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>

fastmodel: Update for the isa_traits.hh changes.

arch/arm/isa_traits.hh no longer has using namespace ArmISA, and also
no longer directly or indirectly provides interrupt number related
constants.

Change-Id: Ieda31d1db4f85632a555b2f72ee8bff0aa159eee
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35037
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

tests,base: Fixed unittests for .fast

unittests.fast, unittests.prof, and unittests.perf had failing tests due
to the stripping of asserts via compiler optimization. This patch alters
the unittests to skip these tests when TRACING_ON == 0.

Change-Id: I2d4ab795ecfc2c4556b5eb1877635409d0836ec6
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34898
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

util: Removed libelf-dev dep from Dockerfiles

The libelf-dev dependency is no longer required in our Dockerfiles.

This reverts commit 0cf67fb36281b17956d4dc10f05054bf711b4ba3,
https://gem5-review.googlesource.com/c/public/gem5/+/33596.

The libelf-dev dependency has been kept for the "all_dependencies"
Dockerfiles.

The corresponding Docker images have been built and uploaded to:
https://gcr.io/gem5-test.

Change-Id: Iacbd8240f69d476ad3a649baaccb6b85fec2487c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34676
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

configs: Add special case in MemConfig

SimpleMemory doesn't implement a full MemCtrl interface. Thus, like the
NVM and HMC memories, we need to add a special case to MemConfig.py. The
--mem-type command line option now works for SimpleMemory and all of the
DRAM interfaces (it does not work for the NVM interfaces, though).

Issue-on: https://gem5.atlassian.net/browse/GEM5-777

Change-Id: I6d60649215be324bdd2a104b1976752f936c960e
Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34595
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

mem-ruby: Remove conditional includes based on THE_ISA in ruby.

These were including instruction class definitions from x86 for some
reason. There was no code in those .cc files which actually used
anything from them, as evidenced by the fact that the GCN3_X86 build
still works. No other code in the file was conditionally compiled as of
today.

Change-Id: I3cef8348fb601dd7af67665cf64bbf514c91c3db
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34577
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

gpu: Fix a syntax error in X86GPUTLB.py.

The recent changes which removed master/slave terminology also
accidentally deleted an "=", making the syntax in that file illegal.

Change-Id: I50aa945f0f66765db36775380b98a88caff23c13
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34576
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

arm: Use zero initialization for the BigRegVect types.

These were being initialized with BigRegVect brv = {0}, which made the
compiler complain because there is internal structure. The first element
of the union is actually an array, and this was telling it to initialize
that array to scalar 0. It was warning about this which was breaking the
build.

Instead, use zero initlization like BigRegVect brv = {}. This
initializes the first element of the union to all zeroes, with all
padding bits initialized to zero as well.

This satisfies the compiler and avoids a build error.

Change-Id: I31e7a8730c538637ff2e0c7fb00a4e12ed05e074
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34575
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

cpu,misc: Revert problematic terminology renames in BaseCPU

Due to gem5's use of duck-typing, we must termorarly revert the
terminology in BaseCPU back to master/slave to avoid issues.

This fixes https://gem5.atlassian.net/browse/GEM5-775.

Change-Id: Idf1cb99aa9568ee70943ebec96f27394d8167f8c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34495
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

mem-ruby: Update port names in Ruby

After the terminology update commit there were still many confusing
names in the Ruby ports. This changeset is a proposal for updating these
names.

For an example use case, see the following resources changeset.
https://gem5-review.googlesource.com/c/public/gem5-resources/+/34416

Change-Id: I01d4f24a70b300e39438ee147dfab7a8d674d5c7
Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34417
Reviewed-by: Ayaz Akram <yazakram@ucdavis.edu>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

tests: Remove MIPS from Learning gem5 tests

Change-Id: Iffd9f5da188cac26ac75a8109886c36789956959
Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34415
Reviewed-by: mike upton <michaelupton@gmail.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

dev: Fix port name in x86 device

Change-Id: I7704109287b9a1a09e51da3c62c29720631ce87e
Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34435
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

arch-arm: Fix ArmISA namespace requirement for Arm KVM

This is needed after:

https://gem5-review.googlesource.com/c/public/gem5/+/34155

Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Change-Id: I614b908a48145d8c2f5e8b8177448e3269f8dac9
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34418
Reviewed-by: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>

misc: Update documentation of SimObject related APIs

Updated documentation of Drain, Serialize, Evnet queue and Simobject
APIs. Made some corrections to where the documentation was available
in the code but did not appear in the documentation.

Change-Id: I5254e87eb5663232e824bcd5592da0a04eba673b
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/31814
Reviewed-by: Ayaz Akram <yazakram@ucdavis.edu>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

mem-garnet: Upgrade garnet version to 3.0

This version of garnet includes HeteroGarnet which
supports heterogenous interconnect systems, flexible
router and link configurations, and better debugging
resources.
This patch changes the garnet directory structure
to not include the version number. The user will be
informed about the garnet version being used.

Change-Id: Id4763421528305193ae0cd10c159b385a9513553
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34259
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

arch-arm: Initialize some cases of destReg

Some compilers complained that this variable may be uninitialized. This
change initializes it to 0.

Change-Id: I201d75ba05ce49d13bbaf4d67e1c728ef704fdf0
Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34335
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: mike upton <michaelupton@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

tests: Update x86 system.py for MemCtrl interface

Change-Id: If4103b197720f74df70d0a24602e2b3715936826
Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34315
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Reviewed-by: mike upton <michaelupton@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

mem-garnet: Allow empty vnet list for garnet network links

An empty supporting_vnet list is the default and implies that
all vnets are supported. This removes the assert which requires
the list to have a minimum list size of 1.

Change-Id: I6710ba06041164bbd597d98e75374a26a1aa5655
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34258
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

mem-garnet: Fix default value of network bridge

Initializing the network bridge with NULL causes it to have
an class error when instatiating a link. The bridge is only
needed whne either a CDC or SerDes is enabled. This is handled
later during construction of the GarnetLink.

Change-Id: If19a21a6d9bf49449b9c390467d08d3422ae991a
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34257
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

misc: Replaced master/slave terminology

Change-Id: I4df2557c71e38cc4e3a485b0e590e85eb45de8b6
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33553
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

configs,python: Fixes an issue with python3 and the config scripts when restoring a checkpoint

Fixes a compatibility issue with the configuration scripts when trying to restore a checkpoint.  Since python2.4 list.sort has an updated interface.  The older one has been dropped in python3.

Jira Issue: https://gem5.atlassian.net/browse/GEM5-754

Change-Id: I09f819057d510e477d6ceae0356fafad40f4280d
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34295
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

tests: cross-compiling hello binaries for hello_se tests.

Some of the hello_se tests fail due to different syntax of the string
for different isas. This patch adds makefiles for cross-compiling the
hello.c file located at tests/test-progs/hello/src/.

Change-Id: I8ccfc0487020df9da722a97e57310db2d2e8882c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/28528
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

cpu: Fixed unused var error when with fast builds

As `is_htm_speculative` is only used in assert statements, it is
considered unused during the `.fast` compilation. This commit adds the
`M5_USED_VAR` macro.

This caused our compiler tests to fail:
https://www.mail-archive.com/gem5-dev@gem5.org/msg35913.html

Change-Id: I00d187d1a31d065c236ac29a657bd479ad4b03bc
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34256
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>

arch-arm: just return the fault in twoEqualRegInst{,Fp}

This prevents the code from using the uninitialized destReg when
running the ``if (imm >= eCount)`` branch, which will make GCC 10.2
report a -Werror=maybe-uninitialized error when building gem5.opt.

Change-Id: Ie6e7d3d47a1b65b840b2106263ecfc21eb6af26b
Signed-off-by: Iru Cai <mytbk920423@gmail.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34275
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

arch-arm: Fix build errors with gcc 10.2

The "-Werror=type-limits" flag in GCC 10.2 reports these errors,
because ``imm`` in neon.isa, and ``imm`` and ``count`` in sve.isa are
unsigned, and they're used to do ``imm < 0`` and ``imm * count >= 0``
comparison.

Change-Id: I33934357f578a9fc1040a6d9c08ea929fb36eb47
Signed-off-by: Iru Cai <mytbk920423@gmail.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33154
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Richard Cooper <richard.cooper@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

dev: Use the new ByteOrder param type in VirtIO devices

VirtIO devices currently request their endianness from the System
object. Instead of explicitly querying the system for its endianness,
expose the device's endianness as a param. This param defaults to the
endianness of a parent object using the Parent proxy (in practice the
system).

Change-Id: If4f84ff61f4d064bdd015a881790f5af03de6535
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33296
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Gabe Black <gabeblack@google.com>

dev: Use the new ByteOrder param type in SimpleUart

Use the new ByteOrder param type in SimpleUart. The default value is
currently little endian. However, it is expected that most users of
this device will use single-byte accesses which aren't affected by
endianness.

Change-Id: I3f5d4ea566e5127474cff976332bd53c5b49b9e2
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33295
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>

fastmodel: Add an ISA class which defers to IRIS.

This class is just to enable checkpointing of "ISA" state, aka the
MiscRegs.

Change-Id: I45315b8aaa09aaf6230f44665c13597400efd780
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/29822
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

fastmodel: Create a fake "Interrupts" object for fast model CPUs.

This object doesn't actually manage interrupts since the fast model
CPUs do that on their own, it just checkpoints interrupt related state.

Change-Id: I9d3a6354b02e4ae7bfd032c50e51a3a841b81388
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/29821
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

arch-mips: Replaced `BigEndianByteOrder` in MIPS

The following change removed the `BigEndianByteOrder` enum and replaced
it with `ByteOrder:big`:
https://gem5-review.googlesource.com/c/public/gem5/+/33174

This change was not propogated to `src/arch/mips/isa/decoder.isa` and
`src/arch/mips/isa/formats/mem.isa`, and therefore caused compilation
errors. This caused the Nightly Build to fail:
https://www.mail-archive.com/gem5-dev@gem5.org/msg35900.html

This commit fixes this error.

Change-Id: I3967eb9e9236a7a95318c17ca410b613b8473eed
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34255
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

arch-arm: Fix ArmISA namespace requirement for TME instructions

This is needed after:

https://gem5-review.googlesource.com/c/public/gem5/+/34155

Change-Id: I8ef0b5ce9cd5ae5224331e1c9347fdd9e884a536
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34235
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

cpu-o3: convert rename to new style stats

Change-Id: Id34a85e40ad7e83d5805a034df6e0c5ad9b9af82
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33397
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

cpu-o3: convert rob to new style stats

Change-Id: I84430d50c49742cd536dd75ce25184c2316dce51
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33398
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

cpu-o3: convert lsq_unit to new style stats

Removes unused stats: invAddrLoads, invAddrSwpfs, lsqBlockedLoads

Change-Id: Icd7fc6d8a040f4a1f9b190409b7cdb0a57fd68cf
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33394
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

cpu-o3: convert decode to new style stats

Change-Id: Ia67a51f3b2c2d40d8bf09f1636c721550f5e9a23
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33316
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

cpu-o3: convert commit to new style stats

Change-Id: I859fe753d1a2ec2da8a4209d1db122f1014af5d6
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33315
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

sim: Expose the system's byte order as a param

There are cases where a system's byte order isn't well-defined from an
ISA. For example, Arm implementations can be either big or little
endian, sometimes depending on a boot parameter. Decouple the CPU byte
order from the System's default byte order by exposing the System's
byte order as a parameter that defaults to big endian for SPARC and
POWER and little endian for everything else.

Change-Id: I24f87ea3a61b05042ede20dea6bb056af071d2c0
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33175
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Gabe Black <gabeblack@google.com>

mem: Remove the unused nvm private member from NVMInterface::Rank.

This unused (and otherwise unusable) member caused a compiler warning
and broke the build for me. It can be reintroduced if used in the
future.

Change-Id: I48181f6bca60c059e74727290950adfb9a194680
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34217
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

cpu: Fix style and add overrides to bas_dyn_inst.hh.

Either return types, brackets and the function body should all be on
their own line, or the entire function should be on a single line.

Consistently place the * or & up against the variable name and not the
type name. There isn't an official rule for which to use, but the
majority of existing uses were this way.

Add overrides for overridden virtual methods.

These fixes get rid of compiler warnings which are breaking the build
for me.

Change-Id: Ifc6ace4794a66ffd031ee686f6b6ef888004d786
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34216
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

arch: Add a virtual destructor to BaseHTMCheckpoint.

Since it has virtual methods, it should also have a virtual destructor.
My compiler complains otherwise, which breaks my build.

Change-Id: I44bba97b76931bab6e3511fcdee79831080c12d4
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34215
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

cpu-minor: convert fetch2 to new style stats

Change-Id: Idfe0f1f256c93209fe51140b9cab3b454153c597
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33975
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

arm: Remove "using namespace ArmISA" from arch/arm/isa_traits.hh.

This has been in this file since it was created in 2009. No global "using
namespace ${NAMESPACE}" should ever appear in a .hh file since then that
namespace is "used" in all files that include the .hh, even if they
aren't aware of it or even actively don't want to.

Change-Id: Idb7d7c5b959077eb4905fbb2044aa55959b8f37f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34155
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

arch-arm: Transactional Memory Extension (TME)

This patch extends the generic hardware transactional memory support in
Ruby and the O3/TimingSimpleCPU cores with the Arm-specific hardware
transactional memory architectural extensions (TME).

JIRA: https://gem5.atlassian.net/browse/GEM5-588

Change-Id: I8c663da977ed3e8c94635fcb11834bd001e92054
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/30329
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>

base,misc: Add group definitions for newly tagged API in src/base

Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Change-Id: If2f5ce3bc4f5d0a8cc31def17702223a27e6970e
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33034
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

mem-ruby: Check number of vnets when creating links

Added error checking to ensure that the system has sufficient virtual
networks when setting latency and weight values.

Change-Id: I1b28144bbe9fefab0c0a6227f1fdf4ea10403061
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/32603
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>

dev,arm: Use the ArmSystem::PageBytes constant in the generic timer.

This component very specific to ARM, and so there's no reason to use
generic interfaces to get the page size.

Change-Id: Id757b5742c807c5f616a6dc8df94a7709932d071
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34171
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

arm: Replicate the PageBytes constant in the ArmSystem class.

When isa_traits.hh hopefully goes away in the not too distant future,
this constant will need somewhere to live so ARM components can find it.
There are valid arguments that this should not be a constant in the
first place, but that's outside the scope of this change.

Change-Id: Ic5bd046dc1cc196b3cf6b6c36878fdbf5eb4c0bf
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34170
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

cpu: convert trace cpu to new style stats

This required making minor changes to how the name was set for the
generators within the trace CPU to enable the stats to keep similar
names.

Change-Id: I9f97d4006a0edbd717fc34d0033b9548011d1631
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33875
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Ayaz Akram <yazakram@ucdavis.edu>

cpu-o3: convert elastic trace to new style stats

Change-Id: If767f17b905a77e12058022a9e8bc65b854978a4
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33399
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

ext,tests: Copy test's output files from /tmp to testing-results

When a test is complete, the output files are in a random folder
in /tmp.

This commit adds a procedure copying those files to
testing-results/SuiteUID/TestUID/ folder, where SuiteUID and
TestUID are the corresponding uid's of the test.

This procedure is triggered after a test is complete and before
the folder in /tmp being removed.

Change-Id: Id960e7f2f1629769008ae99aff4c8bfafa9ca849
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33998
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>

ext: Add post_test_procedure to testlib runner

This procedure is trigger after a test has finished and before
the tearing down process kicks in.

Change-Id: I58ce10814fbc80d96f2f72565491b18de0ec290a
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33997
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>

ext: Force testlib to only create one Log object

Log object should remain being a singleton throughout the program.
The current code creates multiple Log objects, which at least
causes the issues of missing outputs in stdout.

E.g., "Logging call to command", which logs which command is
being called in a subprocess, is missing from stdout.

Change-Id: I96c5dd79c4f14e0a013c15d42d202397488d56b6
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33715
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>

cpu: convert memtest to new style stats

Change-Id: I91b17dd46fd0f70816159ea14c1c8f498048c696
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34137
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

mem: Clean up Memory Controller

Make the actual controller more generic
    - Rename DRAMCtrl to MemCtrl
    - Rename DRAMacket to MemPacket
    - Rename dram_ctrl.cc to mem_ctrl.cc
    - Rename dram_ctrl.hh to mem_ctrl.hh
    - Create MemCtrl debug flag

Move the memory interface classes/functions to separate files
    - mem_interface.cc
    - mem_interface.hh

Change-Id: I1acba44c855776343e205e7733a7d8bbba92a82c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/31654
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

mem: Add NVM interface

Add NVM interface to memory controller.

This can be used with or instead of the existing
DRAM interface. Therefore, a single controller can interface
to either DRAM or NVM, or both.

Specifically, a memory channel can be configured as:
- Memory controller interfacing to DRAM only
- Memory controller interfacing to NVM only
- Memory controller interfacing to both DRAM and NVM

How data is placed or migrated between media types is outside
of the scope of this change.

The NVM interface incorporates new static delay parameters
for read and write completion. The interface defines a 2
stage read to manage non-deterministic read delays while
enabling deterministic data transfer, similar to NVDIMM-P.
The NVM interface also includes parameters to define
read and write buffers on the media side (on-DIMM). These are
utilized to quickly offload commands and write data, mitigating
the effects of lower latency and bandwidth media characteristics.

Change-Id: I6b22ddb495877f88d161f0bd74ade32cc8fdcbcc
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/29027
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Wendy Elsasser <wendy.elsasser@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>

mem: Make MemCtrl a ClockedObject

Made DRAMCtrl a ClockedObject, with DRAMInterface
defined as an AbstractMemory. The address
ranges are now defined per interface. Currently
the model only includes a DRAMInterface but this
can be expanded for other media types.

The controller object includes a parameter to the
interface, which is setup when gem5 is configured.

Change-Id: I6a368b845d574a713c7196c5671188ca8c1dc5e8
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/28968
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

mem: Factor out DRAM interface

Separate out the DRAM specific functions into a new class:
- DRAMInterface

Move the Rank class to DRAMInterface since rank functions are
specific to the media.

Move DRAMPacket and Bank class definitions outside of DRAMCtrl.

This is patch 1 within a set of patches that separate the
memory controller and media interface. These changes enable
future incorporation of new media interfaces into the model.

Change-Id: Ief632d73ec27176a61f16b4f642c10d56630f376
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/28967
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

ext: Make the testing-results folder visible

Currently, testlib will write outputs to .testing-results, which
is a hidden folder. However, the outputs in the folder are useful
for debugging. This commit makes this folder visible on Linux
systems.

Change-Id: I158e1a4a62c7b494309a0a4bf6521fedd04cbe22
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34015
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

base: Tag API methods in crc.hh

Change-Id: I4fc8977dad705a6774f649479184cdfb15aa2be5
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/32961
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>

base: Tag API methods to debug.hh

Change-Id: Ic4395f3594cbc156a2b678710a3ed4717ce87a81
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33257
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

base: Tag API methods in inet.hh

Change-Id: Id53ab873c7de9de7ccb99ff8434827aeec676c30
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33254
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

base: Tag API variables in date.cc

Change-Id: I5a90f6496ef1e39b6135a14dfdf3f5febd22ece2
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/32974
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>

base: Tag API methods in flags.hh

Change-Id: I12eb94b43e190ee46f82fba7d2a3ef6c29fdee80
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33035
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>

base: Tag API variables in version.cc

Change-Id: I49438963a1cdb82b00fa6bea153d55b8cdbfcf33
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33079
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>

base: Tag API methods in intmath.hh

Change-Id: Ia50830c7620380ff2aba081f56f74822aff982bf
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33075
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>

base: Tag API methods in sat_counter.hh

Change-Id: Id5da647f35cca30276bb34b745999f4571a47d89
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33117
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>

base: Tag API methods in condcodes.hh

Change-Id: Ife6b5ed6ee684b65790c374ab6e709ce8eb708ad
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33074
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

base: Tag API methods to trace.hh

Change-Id: Ia2ad759b9bee4fd3413abd62cfa6b120616a14f9
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33255
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

base: Tag API methods in remote_gdb.hh

Change-Id: I7d4d6ce8a2b18a365561ad88434fea7d6823d310
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33256
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

base: Tag API methods in stl_helpers.hh

Change-Id: Ibc967febfd29444214094883121a66600d80cad8
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33118
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

base: Tag API methods in pollevent.hh

Change-Id: Ic2eb596c873fc4917cf650c2e240310b1e025fa5
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33114
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

base: Tag API methods and variables in addr_range.hh

Change-Id: I4bff99ecf1e0eeab4a76574e99163303f7dec83b
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/32955
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>

base: Tag API methods and variables in callback.hh

Change-Id: I4ff6d9914e6edb4e8e7b033aec4b26482e950cc0
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/32959
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

base: Tag API methods and variables in bitunion.hh

Change-Id: I322645801e9832014f54d4ed633796b082b06c6b
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/32958
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>

base: Tag API methods and variables in trie.hh

Change-Id: I4492dbb997a3ece5cb2675b45bf37d7512449ab6
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33080
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

base: Tag API methods in socket.hh

Change-Id: Ifdbe1d9367df602e45fa3d39c91de9e0f8f1d87e
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33078
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>